Her hair, which was a bright white color, was brought together in a sleek updo. What found more interesting about her outfit was her jewelry, though.

Her necklace sparkled and was the center of attention. It featured a big canary-yellow diamond, which reportedly had the same stone that Hepburn once wore for a photo shoot for 'Breakfast at Tiffany's'.

According to the Tiffany website, this 128-carat diamond was discovered in South Africa in 1877. It was then taken to Paris where it was cut into its cushion shape. Since then, it has been worn on a few occasions, including by Hepburn in 1961.

According to E-News, since Hepburn wore the diamond, it has been stored at the Tiffany's Fifth Avenue flagship store in New York City, and the Oscars was the first time that it was worn at an award show red carpet.

Lady Gaga is wearing one of the largest diamonds in the world, worth as much as the production budget for A Star Is Born, channelling Audrey Hepburn who wore it last. What a legend. #Oscarspic.twitter.com/auQdEv5pUS